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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one   *
3    * or more contributor license agreements.  See the NOTICE file *
4    * distributed with this work for additional information        *
5    * regarding copyright ownership.  The ASF licenses this file   *
6    * to you under the Apache License, Version 2.0 (the            *
7    * "License"); you may not use this file except in compliance   *
8    * with the License.  You may obtain a copy of the License at   *
9    *                                                              *
10   *   http://www.apache.org/licenses/LICENSE-2.0                 *
11   *                                                              *
12   * Unless required by applicable law or agreed to in writing,   *
13   * software distributed under the License is distributed on an  *
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
15   * KIND, either express or implied.  See the License for the    *
16   * specific language governing permissions and limitations      *
17   * under the License.                                           *
18   */ 
19  package org.apache.rat.document.impl;
20  
21  import java.io.File;
22  import java.io.FileInputStream;
23  import java.io.IOException;
24  import java.io.InputStream;
25  import java.util.zip.ZipException;
26  import java.util.zip.ZipInputStream;
27  
28  public class DocumentImplUtils {
29  
30      public final static String toName(File file) {
31          String path = file.getPath();
32          String normalisedPath = path.replace('\\', '/');
33          return normalisedPath;
34      }
35      
36      public static final boolean isZipStream(InputStream stream) {
37      	ZipInputStream zip = new ZipInputStream(stream);
38      	try {
39  			zip.getNextEntry();
40  			return true;
41          } catch (ZipException e) {
42              return false;
43  		} catch (IOException e) {
44  			return false;
45  		} finally {
46              if (zip != null) {
47                  try {
48                      zip.close();
49                  } catch (Throwable t) {
50                      // Swallow
51                  }
52              }
53  		}
54      }
55  
56      public static final boolean isZip(File file) {
57          try {
58          	return isZipStream(new FileInputStream(file));
59          } catch (IOException e) {
60              return false;
61          }
62      }
63  
64  }